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ls/gsr ys1 transmission

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  • ls/gsr ys1 transmission

    how can you tell the difference between an ls ys1 transmission and a gsr ys1 transmission without putting it in the car, or opening the case to count gears? most people on craigslist are super weary of you opening the case, even if you know what you're doing.

  • #2
    the splines are different...i encountered this in person this weekend on a search for a transmission, it's hard to see unless you have both together...i'll post up a pic, i have to upload pics

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    • #3
      YS1:




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      • #4
        J1 trans (my LS clutch disc fit on this trans so J1/A1 (LS trans) use the same clutch):



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        • #5
          you can look and see that the GSR/YS1 trans has fatter splines, that's the only difference between the "90-91" and "92-93" clutch...92-93 clutch is only w/ the B17/GSR trans in mind...

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          • #6
            90-91 and 92-93 transmissions are different just as Integra_hot posted but you can't tell the difference between ls ys1's and gsr ys1's from the outside. They have to be opened up or driven to tell the difference.

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            • #7
              Originally posted by rollinmyda View Post
              90-91 and 92-93 transmissions are different just as Integra_hot posted but you can't tell the difference between ls ys1's and gsr ys1's from the outside. They have to be opened up or driven to tell the difference.
              This is correct.
              Track Project DB2 #896
              LeMons Project DA9
              My OG DA9, Wrecked, Stripped, R.I.P

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              • #8
                yeah the splines are different in the years not the internals.
                the j1 is a 90-9vice1 trans. try to avoid the older trannys, they tend to need more service.

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                • #9
                  http://honda-tech.com/showthread.php?t=2338282

                  "If you don't want to disassemble the trans, here is a somewhat simple way to tell:

                  1. Find a crappy old axle and just put the stub in the trans. If you don't have an axle, you can find a suitable sized wooden dowel or PVC pipe. To take up any slack, you can wrap some electrical tape around it so it can go in the splines just firm enough to turn and not fall out. Put the trans in each gear and rotate the input shaft. Look at a transmission chart that shows gear ratios. Take the gear you are in x final drive. That should be how many revolutions it will take on the input shaft for one revoloution of the output shaft. You will probably need to do this in all the gears to get a truly definitive answer.

                  Example: B16 trans 3rd gear is 1.458 and the final drive is 4.40. So, take 1.458x4.4. This equals 6.4152. So, in 3rd gear on a B16 trans, it should take almost 6 1/2 turns of the input shaft to get one revolution on the output shaft.

                  Ryan"

                  -OR-


                  "Count gear teeth. If that's not an option put it in gear and count the number of times the differential rotates vs the input shaft.


                  This should help you out:

                  http://honda-tech.com/showthread.php?t=1967953

                  The specs you'll need to do the math:

                  http://www.ff-squad.com/tech/temp/Bgears.htm

                  - 94EG8"

                  ^ taken from: http://honda-tech.com/showthread.php?t=3134492

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                  • #10
                    Originally posted by TegFan View Post
                    http://honda-tech.com/showthread.php?t=2338282

                    "If you don't want to disassemble the trans, here is a somewhat simple way to tell:

                    1. Find a crappy old axle and just put the stub in the trans. If you don't have an axle, you can find a suitable sized wooden dowel or PVC pipe. To take up any slack, you can wrap some electrical tape around it so it can go in the splines just firm enough to turn and not fall out. Put the trans in each gear and rotate the input shaft. Look at a transmission chart that shows gear ratios. Take the gear you are in x final drive. That should be how many revolutions it will take on the input shaft for one revoloution of the output shaft. You will probably need to do this in all the gears to get a truly definitive answer.

                    Example: B16 trans 3rd gear is 1.458 and the final drive is 4.40. So, take 1.458x4.4. This equals 6.4152. So, in 3rd gear on a B16 trans, it should take almost 6 1/2 turns of the input shaft to get one revolution on the output shaft.

                    Ryan"

                    -OR-


                    "Count gear teeth. If that's not an option put it in gear and count the number of times the differential rotates vs the input shaft.


                    This should help you out:

                    http://honda-tech.com/showthread.php?t=1967953

                    The specs you'll need to do the math:

                    http://www.ff-squad.com/tech/temp/Bgears.htm

                    - 94EG8"

                    ^ taken from: http://honda-tech.com/showthread.php?t=3134492


                    I figured that was an option as well, I just wasn't sure how to figure it out. thanks for the info.

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